Revertante

Revertants (from Latin: revertere = to return, to reverse) are reverse mutants, i.e. mutants in which an earlier mutation has been reversed (at least in its effect) by a further mutation. Especially living beings whose ancestors have lost the ability to synthesize a vital substance through mutation and who have regained this ability themselves through a further mutation are called revertants.

One also speaks of reverse mutations or reversions . Such reverse mutations occur spontaneously with a certain frequency. Under certain environmental influences (presence of mutagenic substances) this frequency can be greatly increased. This is used in the Ames test to check the mutagenicity of substances.

Individual evidence

↑ Katharina Munk (ed.): Microbiology . Georg Thieme Verlag, Stuttgart 2008, ISBN 978-3-13-152011-1 , p. 217 ( limited preview in Google Book search).
↑ Revertants. In: Lexicon of Biology. Spektrum der Wissenschaft Verlagsgesellschaft, accessed on July 20, 2018 .
↑ Jochen Graw: Genetics . 6th edition. Springer, Berlin / Heidelberg 2015, ISBN 978-3-662-44817-5 , pp. 430 f ., Doi : 10.1007 / 978-3-662-44817-5 .

[1] Katharina Munk (ed.): Microbiology . Georg Thieme Verlag, Stuttgart 2008, ISBN 978-3-13-152011-1 , p. 217 ( limited preview in Google Book search).

[2] Revertants. In: Lexicon of Biology. Spektrum der Wissenschaft Verlagsgesellschaft, accessed on July 20, 2018 .

[3] Jochen Graw: Genetics . 6th edition. Springer, Berlin / Heidelberg 2015, ISBN 978-3-662-44817-5 , pp. 430 f ., Doi : 10.1007 / 978-3-662-44817-5 .